Low maintenance and high reliability provide the lowest cost of ownership

Aerotech's AMG position and rate gimbal mounts provide ultra-precise angular position, rate and acceleration for development and production testing of a wide range of systems. The AMG series is ideal for directing optics, lasers, antennas and sensors at high speed to very precise pointing angles. Typical applications include missile seeker test and calibration, LIDAR, electro-optical sensor and FLIR testing, airborne target tracking, optical testing of space-based sensors in a vacuum and angular testing of inertial sensors such as gyros, MEMS, accelerometers and inertial reference units. The AMG gimbal design incorporates recent Aerotech rotary stage design improvements to provide high performance at an affordable price. The finest quality motors, bearings and encoders are integrated into precision-machined housings to ensure peak performance. The AMG position and rate gimbals provide precise angular motion with the high performance customers expect from Aerotech products.

Accurate 360° Positioning and Rate Generation

Direct-drive brushless torque motors, with rare-earth magnets and high-accuracy angular transducers, are coupled directly to precision shafts for accurate and smooth 360° continuous motion. The absence of gear trains and other drive mechanisms eliminates position error contributions due to mechanical hysteresis and backlash. Directly-coupled high-resolution position transducers ensure highly accurate and repeatable positioning.

A wide-range of performance feedback grades is available. Typical line gimbal resolution ranges from 1.0 to 0.13 µrad with Aerotech controls. The built-in azimuth slip ring provides for continuous rotation with no cable wrap up.

Direct-Drive Motors for Outstanding Control

To maximize positioning and velocity performance, AMG gimbal mounts utilize Aerotech’s high torque S-series brushless, slotless servomotors. These motors have all of the advantages of a brushless direct-drive motor — no brushes to wear, no gear trains to maintain and high acceleration and high speeds. Since it is a slotless, ironless design, there is zero cogging, meaning that there is absolutely no torque ripple. This results in smoother motion throughout travel and more precise positioning. These motors are available in different winding configurations to work with high or low voltage power supplies.

Superior Mechanical Design Features

Large diameter, matched-set ABEC-7 bearings maximize performance with respect to wobble, moment stiffness and rotating friction. The large diameter bearing permits large payload capacity without compromising performance. Casting gimbal yokes provide high stiffness to maintain gimbal accuracy under dynamic conditions. Travel limits, hardstops and brakes are available as standard options.

Mirror and Alternate Payload Accommodation

A variety of mirror cell diameters are available for standard optic applications. We also provide for custom payload attachment solutions to accommodate various device interfaces. Each gimbal mirror cell can be modified or replaced with different shaped cells to accommodate sensors or other odd shaped payloads. We understand customer payloads vary and our engineers have a variety of solutions to implement offset CG payloads.

Specifications

AMG Specifications

Model

AMG-200

AMG-300

AMG-400

AMG-500

AMG-600

Travel

360° continuous, AZ/EL

Maximum Bus Voltage

340 VDC

Maximum Torque (Continuous)

Azimuth

2.85 N·m

11.12 N·m

11.12 N·m

19.71 N·m

19.71 N·m

Elevation

2.85 N·m

2.85 N·m

2.85 N·m

11.12 N·m

11.12 N·m

Clear Aperture Diameter(1)

194 mm

292 mm

394 mm

489 mm

591 mm

Accuracy

±24 to ±144 µrad(2) (±5 to ±30 arc sec)

Repeatability

±2.4 µrad (±0.5 arc sec)

Maximum Rotary Speed(3)

100 rpm

100 rpm

100 rpm

50 rpm

50 rpm

Maximum Load Capability

20 kg

40 kg

40 kg

70 kg

70 kg

Axis Wobble

48 µrad (10 arc sec)

Orthogonality

24 µrad (5 arc sec)

Standard Finish

Black Anodize with Hard-Coated Cell

Max Component Diameter(5)

206 mm

306 mm

407 mm

509 mm

610 mm

Nominal Component Thickness

41 mm

54 mm

64 mm

95 mm

102 mm

Mass (Without Mirror)

29 kg

47 kg

54 kg

116 kg

137 kg

Inertia AZ(6)

0.97 kg-m2

1.877 kg-m2

2.71 kg-m2

10.4 kg-m2

14.94 kg-m2

Inertia EL(6)

0.019 kg-m2

0.105 kg-m2

0.27 kg-m2

0.974 kg-m2

2.33 kg-m2

AZ Aperture When Slip Ring Is Removed (AZ Travel Must Be Limited)

50 mm

75 mm

75 mm

100 mm

100 mm

Aperture With Slip Ring

12.7 mm

12.7 mm

12.7 mm

38.1 mm

38.1 mm

Special cell adapters and slip ring assemblies available by special order.

±24 μrad calibrated; ±144 μrad uncalibrated.

Maximum speed based on stage capability; maximum application velocity may be limited by system data rate and system resolution.

Feedback (Required)

Metrology (Required)

Option

Description

-PL1

Metrology, uncalibrated with performance plots

-PL2

Metrology, calibrated (HALAR) wtih performance plots

Integration (Required)

Aerotech offers both standard and custom integration services to help you get your system fully operational as quickly as possible. The following standard integration options are available for this system. Please consult Aerotech if you are unsure what level of integration is required, or if you desire custom integration support with your system.

Option

Description

-TAS

Integration - Test as systemTesting, integration, and documentation of a group of components as a complete system that will be used together (ex: drive, controller, and stage). This includes parameter file generation, system tuning, and documentation of the system configuration.

-TAC

Integration - Test as components Testing and integration of individual items as discrete components that ship together. This is typically used for spare parts, replacement parts, or items that will not be used together. These components may or may not be part of a larger system.